The Topaz IC, (part number IRT5011), has been developed by Innovision Research & Technology plc to address Near Field Communication (NFC) and Radio Frequency Identification (RFID) tagging applications working to the ISO/IEC 18092, ISO/IEC 21481 and ISO/IEC 14443A standards.The Topaz IC based tag has been mandated by the NFC Forum as the Type 1 Tag Format to work with NFC devices.The Topaz IC is a two terminal device designed to be connected to a loop antenna to produce a passive NFC/RFID tag operating in the standard unlicensed 13.56MHz frequency band.The read/write data in the Topaz IC memory is EEPROM-based, allowing individual blocks to be locked into read only operation by contactless command. Once locked, the process is irreversible.The Topaz IC is based on a physical EEPROM array size of 120 bytes.

Features· Topaz IC can be used in NFC Forum Tags/Smartposter/ One-touch Setup applications as well as general RFID· Targeted for operation with NFC devices which work to ISO/IEC 18092 (NFCIP-1) and/or ISO/IEC 21481 (NFCIP-2)· Designed to be compatible with the ISO/IEC 14443:2001 parts 2 and 3· ISO/IEC 14443 type A modulation scheme· Passive RFID tag operating in the unlicensed 13.56MHz band· Read and Write (R/W) operation· One Time Programmable (OTP) & Write Once Read Many (WORM) operation· Typical operating range up to 10cm depending on tag/reader antenna coil sizes and orientation relative to the reader unit· Fast data communication rate of 106 kbit/s· UID provision in Topaz IC to enable collision detection by means of the Reader/Writer issuing a RID (Read UID) command.· Protection smart cards for data during the write operation by the Topaz IC only responding to commands prepended with a matching UID. This also provides protection in the situation where there are multiple tags in the reader field· Fast byte write speed· Data communications are protected by 16-bit CRC integrity checking· EEPROM based user read/write memory area organised as 12 blocks of 8-bytes· 7-bytes of Unique Identification (UID) number for use in data authentication/anti-cloning· 96-bytes of user read/write memory· 6-bytes of OTP memory· All memory areas are individually one time lockable by RF command to prevent further modification of data and to produce read only functionality

Compared with traditional near-field communication, near field communication (NFC) there is a natural safety, and the rapidity of connection is established, the specific contrast in the following table:NFC bluetooth network type infrared point-to-point single point to point to more use distance of 0.1 m or less 10 m or less 1 m or less speed 106, 212, 424 KBPSPlanning rate of up to 868 KBPS721 KBPS 115 kbps2. 1 Mbps ~ 1.0 Mbps setup time < 0.1 s6s0. 5 s security, hardware implementation, software implementation does not have, except when using IRFM communication mode active - active/passive active - active low cost low, active and positive.contactless cards

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